The United States has about 225,000,000 Christians; making it the country with the most Christians in the world.
However this number includes a significant proportion of people who profess Christianity, but do not regularly attend church or practice Christian sacraments.
The second largest Christian country in the world is Brazil, with a significant percentage of its population identifying as Christian, primarily Catholic.
That question has two answers. The largest country in the world by area is Russia, but the largest country in the world by population is China.
No, Russia has the 9th largest population in the world.
I believe that the nation with the largest Christian population is China.
China is the largest country in the world by population.
China has the largest population of any country in the world, followed closely by India. {This information is good as of February, 2009.}
The third largest country in the world by area is the United States, and it is also the third most populous. China is the largest country in the world by population.
China
The largest country in the world by land area is Russia. It spans across Eastern Europe and Northern Asia, covering approximately 17 million square kilometers.
Spain is the 45th largest country in the world in terms of land area.
Indonesia, which has a population of 237,641,326 with 3.39% of the world's population.
Brazil is the 5th largest country in the world in both land mass and population.